I'm in a bit of a similar situation, in that my guy is active on the dating site where we met. However, I take that as a good sign, in that he hasn't been able to find any one woman who he wants to be with. And if he needs to date a bunch of women to find out that I'm the one, well that's his journey to us being together. My journey is staying focused on making myself the best person to share with the right guy.
Keep looking for the positives, they're always there!